Fig. 3. Photosynthetic rates (PR) of the flag leaves of (A) an indica/indica (I/I) hybrid rice Shanyou 63 and two japonica/indica (J/I) hybrids, (B) Ce 03/Yangdao 4 and (C) PC 311/Zaoxiandang 18, during the first 28 d after withholding water. Treatment details are the same as in Fig. 1. Vertical bars represent ± standard of the mean (n = 6) where these exceed the size of the symbol.